示例：
　var box = document.getElementById('Ele');
Move.action(box,{width:500,height:200,left:200,top:100,marginLeft:10,opacity:.5},5,function(){
console.log('end');
});

*/

var Move = {

version: '1.5',//判断是否空对象
isEmptyObject: function(obj) {
for (var attr in obj) {
return false;
}
return true;
},//取CSS样式值
getStyle: function(obj,attr) {
if (obj.currentStyle) { //IE
return obj.currentStyle[attr];
} else {
return getComputedStyle(obj,null)[attr];
}
},//运动
action: function(obj,json,sv,callback) {

_this = this;

//obj是否为空
if (_this.isEmptyObject(obj)) {
return false;
}

//运动开始
clearInterval(obj.timer);
obj.timer = setInterval(function() {
var isAllCompleted = true,//假设全部运动都完成了
speed,//速度
attrValue,//当前值
targetV; //目标值
for (attr in json) {
attrValue = _this.getStyle(obj,attr);
switch (attr) {
case 'opacity':
attrValue = Math.round((isNaN(parseFloat(attrValue)) ? 1 : parseFloat(attrValue)) 100);
speed = (json[attr] 100 - attrValue) / (sv || 4);
targetV = json[attr] * 100;
break;
default:
attrValue = isNaN(parseInt(attrValue)) ? 0 : parseInt(attrValue);
speed = (json[attr] - attrValue) / (sv || 4);
targetV = json[attr];
}

speed = speed > 0 ? Math.ceil(speed) : Math.floor(speed);
//如果循环过程中存在尚未结束的运动，isAllCompleted为假
if (attrValue != targetV) {
isAllCompleted = false;
}

switch (attr) {
case 'opacity':
{
obj.style.filter = "alpha(opacity=" + (attrValue + speed) + ")";
obj.style.opacity = (attrValue + speed) / 100;
};
break;
default:
obj.style[attr] = attrValue + speed + 'px';
}
}

//所有循环结束后，只有当全部运动结束后（isAllCompleted=true）时才关闭定时器
if (isAllCompleted) {
clearInterval(obj.timer);

if (typeof callback === 'function') {
callback();
}

}
},30);
}

};